Trestles 0 Sleeping Bag - LongThe full featured Trestles 0 is a reliable, all purpose synthetic bag that insulates even in sustained cold and damp conditions. Updated style lines and fabric liner keep you comfortable on backpacking, trekking and mountaineering trips. Features Fold Down Second Zipper Provides added Ventilation and Easy Access, Main Zipper Anti Snag Slider reduces Snagging Anatomically 3D Footbox increases the insulation and room for your feet, for more Warmth and